He also provided his voice talents to a number of animated projects, including Kay in The Sword in the Stone, Aquaman and Green Arrow in Super Friends and Kranix in the 1986 film Transformers: The Movie.

Later roles included Lou Caruthers, the owner of the coffee shop in 1955 in Back to the Future, and the colour-blind cameraman Bill in Ed Wood.

Alden is survived by his children Brent and Ashley, grandson Zooey and partner Linda Thieben.

His family are planning a celebration of his life and career in Los Angeles next month and in Fort Worth in September.